301results about "Lignin material coatings" patented technology

The present invention provides an automotive tire containing from 0.1 wt % to 50 wt % hydrophobic nanocellulose. Hydrophobic nanocellulose may include lignin-coated nanocellulose and / or a chemically modified surface to increase hydrophobicity. The nanocellulose may include cellulose nanofibrils and / or cellulose nanocrystals. The nanocellulose may be introduced into tire components such as inner liner, body ply, sidewall, beads, apex, belts, treads, cushion gum, and textile fabric. The nanocellulose may be obtained from a biomass-fractionation process utilizing an acid catalyst, a solvent for lignin, and water to generate a lignin-containing nanocellulose precursor, followed by mechanical treatment of the nanocellulose precursor to produce the nanocellulose. For example, the nanocellulose may be obtained from the AVAP® process. The tire may further include one or more additional components derived from lignocellulosic biomass. For example, the tire may contain lignin-derived carbon black, lignin-derived antioxidants, or biomass-derived silica. The tire may also contain synthetic polymers derived from biomass sugars.

A polymer-nanocellulose-lignin composite as disclosed comprises a polymer, nanocellulose, and lignin, wherein lignin forms a hydrophobic interface between the polymer and the nanocellulose. In some variations, a process is disclosed for producing a polymer-nanocellulose-lignin composite material, comprising: fractionating lignocellulosic biomass in the presence of an acid, a solvent for lignin, and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin, wherein lignin deposits onto fiber surfaces or into fiber pores; mechanically treating the cellulose-rich solids to form a hydrophobic nanocellulose material comprising cellulose fibrils and / or cellulose crystals; hydrolyzing the hemicellulose to generate fermentable hemicellulosic sugars; fermenting the fermentable hemicellulosic sugars to generate a monomer or monomer precursor; polymerizing the monomer to produce a polymer; and combining the polymer with the lignin-coated nanocellulose to generate a polymer-nanocellulose-lignin composite material for use in a wide variety of products.

The present invention relates to compositions comprising modified lignin and modified cellulose which are suitable for use in additive manufacturing (e.g. 3D printing), in particular for direct ink writing (DIW). In particular, the invention relates to a composition suitable for direct ink writing, comprising a) a functional ether of lignin, b) a functional ether of cellulose, and c) a solvent comprising an aliphatic alcohol and optionally water. The content of the functional ether of lignin in the composition is at least 25 wt. % based on the combined weights of functional ether of lignin and functional ether of cellulose.

The invention discloses a high-light-resistance nano lignin-based composite coating as well as a preparation method and application thereof, and belongs to the technical field of wood protection. Compared with traditional unmodified lignin, the high-light-resistance nano lignin-based composite coating prepared by taking lignin nanoparticles prepared from quaternized lignin and nano TiO2 as raw materials has more excellent light resistance; according to the high-light-resistance nano lignin-based composite coating provided by the invention, the original texture of wood can be reserved, and the defects of a traditional protection method are effectively overcome. In addition, according to the preparation method of the high-light-resistance nano lignin-based composite coating, raw materials are saved, and the high resource utilization rate is achieved. The high-light-resistance nano lignin-based composite coating can remarkably improve the ageing resistance of wood, and the application prospect of the wood in the fields of outdoor landscape building materials, durable furniture, wood packaging and the like is expanded.

The invention belongs to the technical field of straw resource utilization and agricultural degradable mulching films, and particularly discloses a water absorption and retention type straw-based biodegradable spraying mulching film and a preparation method thereof.Straw short fibers and biodegradable super absorbent resin are mixed through a V-shaped mixing machine according to a certain proportion, and a homogeneous dry powder formula is prepared; the preparation method comprises the following steps: preparing an adhesive aqueous solution with a certain concentration as a liquid-phase formula, synchronously spraying the dry powder formula and the liquid-phase formula according to a certain ratio by adopting a dry powder sprayer and a water mist spraying can respectively to prepare the continuous and stable mulching film, and preparing the mulching film through simple processes such as crushing, mixing and spraying without complicated equipment. The production cost is obviously lower than that of an existing synthetic polyester / natural polysaccharide mulching film, meanwhile, the problem of environmental pollution caused by straw incineration is solved, the agricultural sustainable development requirement is met, large-scale production is facilitated, the utilization rate of agricultural water resources is increased, and the mulching film has great application potential in arid / semi-arid regions.

The present disclosure relates to the technical field of film material, and particularly to a polymeric polyphenol-modified polymer film, a preparation method thereof and a metallized polymer film. According to the present disclosure, corona treatment is performed to a surface of a polymer layer, so that a polar modifying liquid can uniformly coat the surface of the polymer layer, thereby forming a modification layer tightly combined with the polymer layer. Thus, the low-polarity polymer layer surface can be imparted with a durable high polarity. Consequently, the polymer layer is capable of being stably and tightly bonded to a material layer with high polarity and high surface tension, such as a metal layer, for a long period of time, effectively broadening the application scenarios for non-polar polymer substrate layers. By controlling the concentrations of the polyphenolic compound and the cross-linking agent in the modifying liquid, the modification layer formed by a cross-linking reaction can have a suitable cross-linking density and an adequate number of hydroxyl groups, thereby further effectively and stably enhancing the long-term polarity and surface tension of the polymer layer. The preparation method is simple and easy to operate, cost-effective, efficient, and easy to scale up.

The invention provides an anti-corrosion liquid film and a planting method for climate intelligent agriculture in a semi-arid windy desert area, and belongs to the technical field of desertification cultivated land control and desertification control. The anti-corrosion liquid film is prepared from humic acid, sodium alginate, carboxymethyl chitosan, polyethylene glycol, guar gum and water. The anti-corrosion liquid film has good anti-corrosion and soil moisture preservation capacity, can promote soil to form aggregates and improve the soil structure, has good film forming performance and tensile strength, is easy to degrade and does not cause pollution to the environment. After previous crops are harvested, fertilization, ridging and grass seed sowing are carried out, then the anti-corrosion liquid film is sprayed, and the crops are planted in spring according to the soil moisture content. By means of the method, the emergence rate and yield of desertification farmland crops can be increased, meanwhile, climate environment changes are effectively coped, the soil organic matter content and the soil porosity are increased, economic benefits can be increased while wind prevention and sand fixation are achieved, and the purposes of improving desertification degradation, recarburizing, fertilizing and disaster prevention and reduction are achieved.

The invention relates to the technical field of agriculture, and discloses an ecological environment-friendly microbial degradation mulching film which comprises the following components in percentage by mass: 50-65% of polylactic acid; 15% to 25% of lignocellulose; 5%-10% of glycerin; 0.5%-2% of nano titanium dioxide; 0.1% to 0.5% of silver nanoparticles; 0.5%-2% of a tea tree oil extract; 15% to 20% of carboxymethyl cellulose; 13%-15% of a plant growth regulator; 5%-10% of an auxiliary agent; the auxiliary agent comprises one or more of an antioxidant, a plasticizer and a light stabilizer, and the plant growth regulator comprises one or more of a seaweed extract, indoleacetic acid or oleanolic acid. By adding nano titanium dioxide and silver nanoparticles into the mulching film, excellent ultraviolet resistance and antibacterial performance of the mulching film are achieved, and the problem that aging of a traditional mulching film is accelerated due to ultraviolet irradiation is solved.

53 ABSTRACT The present invention provides a method of producing a flame retardant composition comprising hemicellulose and lignin components; and its use. 5

The invention provides a super-hydrophobic functionalized vanadium dioxide film as well as a preparation method and application thereof. The super-hydrophobic functionalized vanadium dioxide film is prepared from the following raw materials: cellulose and alpha-tocopherol modified M-phase vanadium dioxide. The alpha-tocopherol can be used for performing surface treatment on the VO2, so that the oxidation resistance and acid resistance of the VO2 and the stability of the VO2 in a film-forming reagent are effectively improved. Besides, after cellulose, alpha-tocopherol modified M-phase vanadium dioxide, an optional adhesive and other raw materials are mixed and laid on the base plate through a physical means, cellulose can be inserted into the surface layer of the base plate in a sowing and transplanting mode, and it can be ensured that alpha-tocopherol modified M-phase vanadium dioxide particles on the plane of the base plate do not shift; and a large number of cellulose and alpha-tocopherol modified M-phase vanadium dioxide particles can provide enough roughness for the coating, so that the super-hydrophobicity of the surface of the substrate is realized.

The invention discloses a self-crosslinking exterior wall coating containing reinforcing fibers and a preparation method thereof. The coating comprises the following components by mass: 10-20% water, 0.1-0.5% bentonite, 0.1-0.5% cellulose, 3-8% reinforcing fibers, 0.5-2% ethylene glycol, 0.5-1.5% dispersant, 0.1-0.5% wetting agent, 0.1-0.3% multifunctional additive, 15-25% titanium dioxide, 8-15% precipitated barium sulfate, 2-8% silane-modified nano-silica, 5-10% water-based polyurethane emulsion, 30-40% organosilicon-modified acrylic emulsion, 1-3% film-forming aid, 0.1-0.3% bactericide, 0.1-0.2% preservative, 0.5-1% mildew inhibitor, 0.3-1.1% defoaming agent, and 0.5-1.8% leveling agent. By compounding silicone-modified acrylic emulsion and water-based polyurethane emulsion, and adding silane-modified nano-silica and reinforcing fibers, the coating has excellent resistance to artificial weathering, wear resistance, impact resistance, corrosion resistance and high hardness.

The present application belongs to the technical field of aluminum foil production, and specifically discloses a non-stick aluminum foil and a preparation method thereof. The non-stick aluminum foil includes a base layer and a surface coating, and the weight percentages of the raw materials in the base layer are as follows: Si 0.2-0.4%, Mg 0.06-0.09%, Fe 0.5-0.8%, Cr 0.1-0.15%, Cu 0.1-0.2%, Mn 0.03-0.08%, Ti 0.03-0.06%, and the balance Al; the raw material components of the surface coating include the following raw materials: food-grade methyl silicone oil, a catalyst, an antibacterial agent, and a cross-linking agent. The surface of the non-stick aluminum foil is perforated, with 1-2 holes per square centimeter. The non-stick aluminum foil surface coating prepared in the present application can prevent food from adhering to the packaging, making it easy to take out the food and clean the packaging.

A blended furnish with improved performance characteristics while reducing environmental impact, when applied to a substrate and methods of making and using blended furnish are provided. A composite product using a blended furnish is also provided.

The invention relates to the technical field of insulating paint, in particular to insulating paint capable of preventing bird damage and foreign matter lap joint and a preparation method of the insulating paint. The invention provides an insulating coating for preventing bird damage and foreign matter lap joint. The insulating coating is prepared from the following raw materials in parts by weight: 55 to 80 parts of methylsilane modified polyurethane liquid, 23 to 40 parts of polyamide fiber nano powder, 10 to 20 parts of organic silicon modified calcium lignosulphonate suspension, 8 to 10 parts of hydrophobic silicon dioxide, 2 to 5 parts of flatting agent, 1 to 2 parts of pigment, 3 to 5 parts of anti-aging agent and 10 to 15 parts of diluent. The insulating property of the coating is extremely high, the withstand voltage value per millimeter can reach 40kV and above, while the withstand voltage value per millimeter of a conventional insulating coating is generally 18kV; and the insulating paint is high in strength and good in toughness, and has good hydrophobicity and hydrophobicity migration.

The invention provides a polyurethane coating which is a double-component polyurethane coating. The double-component polyurethane coating comprises a component A and a component B. The component A is composed of the following components in parts by weight: 120-180 parts of waterborne polyurethane acrylate, 40-60 parts of a waterborne polyurethane / boron nitride compound, 2-5 parts of a photoinitiator, 0.5-3 parts of an auxiliary agent and 40-70 parts of water. The component B is prepared from the following components in parts by weight: 5 to 10 parts of porous titanium dioxide loaded with copper ions or zinc ions and 90 to 100 parts of ethanol. According to the wear-resistant light-cured polyurethane coating provided by the invention, step-by-step layered coating is carried out on the surface of a base material, and a wear-resistant polyurethane coating is obtained.

The invention relates to the technical field of composite membrane preparation, in particular to a lignin-cellulose nanofiber-based composite membrane, a preparation method and application. The preparation method comprises the following steps: mixing a carboxylated cellulose nanofiber aqueous solution, a polyvinyl alcohol aqueous solution and an ethanol solution of 4-phenylazo phenol, pouring into a mold, and drying to obtain a basement membrane; polyimide and dealkalized lignin are used as raw materials, polyethylene glycol diglycidyl ether is used as a cross-linking agent, condensation reaction is carried out in the presence of a solvent, a dealkalized lignin-polyimide composite solution is obtained, a basement membrane is coated with the dealkalized lignin-polyimide composite solution, drying treatment is carried out, and the lignin-cellulose nanofiber-based composite membrane is obtained. The lignin-cellulose nanofiber-based composite membrane prepared by the preparation method disclosed by the invention not only has excellent photothermal conversion and humidity gradient change properties, but also has excellent wet responsiveness and photoresponsiveness, and overcomes the defects in the prior art.

The invention belongs to the technical field of nano materials and environment-friendly functional coatings, and discloses a preparation method and application of a lignin-based super-hydrophobic coating. The method comprises the steps that lignin is pretreated with ethylene carbonate to break steric hindrance and improve the grafting rate, then hexadecyl trimethoxy silane is added for grafting to form a hydrophobic chain, and surface energy is reduced; then adding silicon dioxide and N, N-dimethylformamide, carrying out ultrasonic dispersion to synergistically construct a micro-nano coarse structure, spraying the micro-nano coarse structure on a base material by using a spraying method, and putting the base material into a drying oven for curing, so as to obtain the lignin-based super-hydrophobic coating material. According to the method disclosed by the invention, a high-activity epoxy group is grafted on a lignin skeleton through ethylene carbonate pretreatment, so that steric hindrance in a three-dimensional space is broken, and dense anchor points are provided for a subsequent hydrophobic chain; then cocondensing with hexadecyl trimethoxy silane to form an alkyl-siloxane double network, and cooperating with nano silicon dioxide to construct micro-nano double roughness, so that a stable super-hydrophobic core under a fluorine-free condition is realized, and the technical route is simple and efficient.

The present invention describes a method for treating cellulosic materials with a composition comprising hemicellulose and / or lignin and a sucrose fatty acid ester to modify the barrier function of such materials. The disclosed method uses hemicellulose or lignin in combination with a sugar fatty acid ester to form a film on the cellulosic material, and the disclosure includes providing products made by such methods. Materials so treated exhibit more effective barrier function and mechanical properties and can be used in any application where such characteristics are desirable.

The invention aims to provide a preparation method and application of a CMC / PVA active packaging film coated with chitosan-tannic acid on the surface, and belongs to the field of food preservation. Comprising the following steps: firstly, preparing a CP40 film, and then preparing a CP40 / CT% composite film: preparing a chitosan solution with the mass concentration of 1%, adding tannic acid TA into the chitosan solution, stirring for 30 minutes in a shading manner at room temperature to form a CT coating solution, flatly laying the prepared CP40 film on a planar carrier, coating the surface of a substrate film with the CT coating solution, and putting the composite film and the carrier into a drying oven at 45 DEG C for constant-temperature drying, so as to obtain the CP40 / CT% composite film. And after the solvent of the coating layer is completely volatilized, taking out and stripping to obtain the CP40 / CT% composite film. Under the action of hydrogen bonds and electrostatic attraction, a compact network structure of an amorphous-weak crystal region is formed in the composite film, so that the interface bonding strength of the film is enhanced, and the rigidity and flexibility of the film are balanced. The physical and chemical properties and biological activity of the composite membrane are synergistically optimized, and the composite membrane has obvious degradation signs after being buried in soil for 35 days and belongs to a biodegradable material.

The application discloses a kind of cement-based material surface biomimetic hydrophobic coating, including 0.1-0.6 parts of organic matter containing catechol group, 0.2-3 parts of dodecylamine, 17-75 parts of tris buffer solution, 13-69 parts of anhydrous ethanol, 0.1-0.5 parts of hydrogen peroxide, 0.1-1 parts of deposition aid;Coating surface microstructure is plate block and small spherical shape.The application also discloses the preparation method of the cement-based material surface biomimetic hydrophobic coating, including the following steps: mixing dopamine, dodecylamine, tris buffer solution and anhydrous ethanol, and loading into the middle part of atomization device container for spraying deposition solution;CuSO4 and H2O2 are divided and loaded into the container on both sides of atomization device;Each face of cement test block is sprayed, dried, and cyclically sprayed-dried;Surface is washed, and naturally dried.The application prepares biomimetic hydrophobic coating on cement-based material surface by one-step co-deposition method, and the prepared coating has the characteristics of good hydrophobicity and uniform deposition.

The present invention relates to the technical field of flame retardant materials, and specifically discloses a carbon quantum dot, a flame retardant biomass composite film, a preparation method and an application. The present invention uses urea and its derivatives as hydrogen bond donors, aminoglycerol-type substances as hydrogen bond acceptors, and then coordinates and combines with aluminate to obtain a precursor with good chemical stability; the precursor is used as a raw material to prepare carbon quantum dots through solvent thermal reaction. The flame retardant film formed by the carbon quantum dots, lignin and cellulose is used to modify the polymer substrate, which effectively solves the problems of poor compatibility and bonding between lignin, cellulose and the polymer substrate, and the synergistic effect between the carbon quantum dots and lignin and cellulose significantly improves the flame retardant effect of the biomass composite film. At the same time, it also effectively suppresses the smoke production when the polymer substrate burns, which is conducive to expanding the application field of polymer materials and has broad application prospects in the flame retardant field.

The application discloses a PMC-fiber bundle synergistically reinforced self-adaptive ecological slope protection matrix and a preparation method and application thereof, and belongs to the field of slope ecological restoration and functional materials. The matrix is composed of a PMC-mineralization functional composite bacterial system microcapsule core, a degradable fiber bundle skeleton and a carboxymethyl cellulose sodium / potassium polyacrylate composite humidity response type hydrogel carrier three-phase composite, and can automatically regulate active ingredient release and dormancy according to soil moisture content. The application forms a four-phase synergistic reinforcement system of "microorganism-root-fiber-mineral", solves the problems of disconnection of active release of traditional matrix, mechanical empty window period and insufficient interface strength, improves the root-soil-fiber interface friction coefficient, continuously enhances the slope shear strength, prolongs the effective period to 5 years, reduces the cost by 40%, and is suitable for ecological reinforcement of various slopes such as expansive soil and coarse-grained soil.

According to the anti-ultraviolet aging coating for the outer wall of the pipeline, the outer wall of the pipeline is coated with modified paint to form the anti-ultraviolet aging coating, and the coating thickness is 1-2 mm; the modified paint comprises the following raw materials in parts by weight: 35-40 parts of epoxy resin, 4-7 parts of an auxiliary agent, 8-12 parts of a curing agent and 30-35 parts of an acetone solvent. According to the anti-ultraviolet aging coating disclosed by the invention, the epoxy resin, the auxiliary agent, the curing agent, the reinforcing agent based on nanocellulose modification and the modifier are blended, and the modified paint prepared by matching and coordinating the raw materials is brushed on the outer wall of the pipeline, so that the prepared coating product has excellent impact resistance and adhesive force performance; the performance of the product is coordinated and balanced, and the anti-ultraviolet stability effect of the product is remarkable.

According to an example aspect of the present invention, there is provided an intumescent fire retardant composition comprising: an acid source comprising or consisting of ammonium phytate; and a carbon source selected from the group consisting of: carbohydrates, chemically modified lignins, tannin, and any combinations and derivatives thereof.

The application discloses a kind of green hydrophobic light-weight bio-based composite material of wood structure imitation and preparation method thereof, comprising the following steps: plant fiber is treated by low-alkali cooking pretreatment, standby;Starch is mixed with water, then 75-95 ℃ is added with ultrasonic vibration stirring 1-2h, then adding mesophilic alpha amylase is carried out enzymolysis, after enzymolysis is completed, oxidation treatment is carried out, then urea is added to starch, stirring reaction 1-2h, finally foaming agent is added, uniformly stirred, and the foaming hot melt modified starch is prepared;Wood pulp fiber, lignin, pretreated plant fiber and foaming hot melt modified starch are mixed according to proportion, and mixed slurry is obtained;The mixed slurry is injected in injection molding machine, and the intermediate bubble layer is prepared;A layer of waterproof film containing lignin nanocellulose slurry and polylactic acid mixed solution is sprayed on the surface of the intermediate bubble layer, and the dense waterproof layer is prepared, that is, obtained.

Provided is a novel oilproofing agent capable of imparting oil resistance to a substrate (in particular, a pulp substrate), the oilproofing agent containing a liquid-repellent compound and a lignin compound.

The present disclosure belongs to the technical field of flame-retardant polymers, and in particular, to a composite coating and a preparation method and use thereof. The present disclosure provides a composite coating, including n unit coatings arranged in layers, where n≥1. Each of the unit coatings includes a first coating and a second coating arranged in layers in sequence. The first coating and the second coating both include a water-soluble polymer compound. The water-soluble polymer compound includes an electropositive water-soluble polymer compound or an electronegative water-soluble polymer compound. The water-soluble polymer compounds in the first coating and the second coating have opposite electrical properties. The first coating and / or the second coating further include / includes M(OH)(OCH3), where the M includes one or more selected from the group consisting of Co, Ni, Fe, Mg, Al, and Zn. The composite coating provided by the present disclosure has excellent flame retardancy.

The invention relates to the technical field of flame-retardant materials, and particularly discloses a carbon quantum dot and flame-retardant biomass composite film as well as a preparation method and application thereof. The preparation method comprises the following steps: taking urea and a derivative thereof as hydrogen bond donors, taking an aminoglycerol substance as a hydrogen bond receptor, and carrying out coordination binding with aluminate to obtain a precursor with good chemical stability; the precursor is used as a raw material, and the carbon quantum dots are prepared through solvothermal reaction. The flame-retardant film formed by the carbon quantum dots, the lignin and the cellulose is used for modifying a high-molecular polymer base material, so that the problems of poor compatibility and binding force between the lignin and the high-molecular polymer base material and between the cellulose and the high-molecular polymer base material are effectively solved; the flame-retardant effect of the biomass composite film is remarkably improved, meanwhile, the smoke yield during combustion of a high-molecular polymer base material is effectively inhibited, the application field of a high-molecular polymer material is expanded, and the biomass composite film has a wide application prospect in the flame-retardant field.

To solve such problems that: a conventional ink which is mainly used for an edible ink not requested in high color development, and printing on tablets has a low color material concentration of a plant charcoal powder coloring matter, and is inferior in color development when being applied to usage excluding printing, and on the other hand, the ink is not excellent in reliability such as redispersion and clog recoverability when a color material concentration of the plant charcoal powder coloring matter is raised in order to enhance color development of the ink; when a grain size of the color material of the plant charcoal powder coloring matter is reduced, thickening or gelatinization is generated caused by volatilization of water and a solvent, and viscosity change occurs; and when the color material is used without reducing the grain size, clog of a nozzle is generated when the ink is discharged.SOLUTION: An inkjet ink composition contains water, a plant-derived carbonized color material, and a lignin resin.SELECTED DRAWING: None

The invention discloses an environment-friendly coating which is prepared from the following raw materials in parts by weight: 40-60 parts of modified vegetable oil emulsion, 10-15 parts of a nano photocatalyst, 5-8 parts of plant fiber filler, 3-5 parts of a biomass calcium agent and 1.8-2.5 parts of a synergistic aid. The preparation method of the environment-friendly coating comprises the following steps: S1, plant fiber pretreatment; s2, carrying out antioxidant modification on the emulsion; s3, gradient grinding; and S4, curing. According to the environment-friendly coating, the oxidation chain reaction of soybean oil is blocked through tea polyphenol grafting, the free radical capture rate is high, aging is delayed, meanwhile, zero toxicity release and zero formaldehyde generation of the environment-friendly coating are achieved, and meanwhile the hardness defect of bio-based emulsion is effectively overcome through the soybean oil-tea polyphenol grafting technology; shell powder is used for loading TiO2 to form electron-hole pairs, so that formaldehyde can be purified for a long time; plant fibers are added and matched with shell powder and nano TiO2 to form a ternary reinforcing system, so that the crack resistance of a coating film is enhanced; the activity of natural components is protected through low-temperature grinding, and the retention rate of tea polyphenol is high.